Grass-edge trimmer



A. NICWHORTER.

GRASS EDGE T RIMMER.

APPLICATION HLED 050.17, |920.

1,41 6, 1 O6. Patented May 16, 1922.l

2 SHEETS-SHEET l..

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ENTOR.' .CLM-mm l BY l 7 mou/MM* MGM/l w ATTORNEYS.

A. MCWHORTER.

GRASS EDGE TRINIMER. AP'PLICATION man Dec.17, m2o. 1,41 6, 106. y Patented May 16, 1922.

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ATTORNEYS UNITE ST'l'S PATE crie.

ALLEN MCWHORTER, 0F RIVERTON, NEW JERSEY. i

GRASS-nnen TRIMMER.'

Specification of Letters Patent. Patented May 16, 1922. i

application filed. December 17, 1920." `Serial No. 431,344.

or like walk, road, path, etc., the same embodying a main rotatable grass shearing blade, a frame on which the same is mounted, said blade being adapted to have its peripheral portion wedged against the side of the walk, etc., and so pressed flat and close against the side ofthe walk, etc., as to cause the shearing of the grass that hangs over the side of the walk, etc., close to said side, said peripheral portion wedging between the walk, etc., and the sod producing a groove between said parts, parallel theret with, and a trailer mounted on said frame rearward of said main blade in the longitudinal direction thereof adapted to follow said blade in said groove and consisting of a body having a comparatively' narrow peripheral edge adapted to enter and run iny said groove and thereby guide said mainblade and keep it true' and steady in its work whereby lateral wabbling or other irregularity in the working of the device is prevented.

Furthermore, the bevel edge I,of the shearing blade runs against the side of the sod and so causes the wedging of they flat` side of said blade flat against the said side of the walk thus also sharpening the shearingv fork having its rear ends firmly connected edge of said blade. e

The invention is satisfactorily illustrated in the accompanying drawing, but the `important instrumentalities thereof! may be varied, and so itis to be understood that the invention is-not limited to the specific details shown and described, as long as they areiwithin the Spirit or scope of the claims. Figure'l represents a side elevation kof a grass edge trimmer embodyingmy invention. Figure 2 represents a top plan view thereof.' y

Figure 3 represents a bottom plan view of a portion thereof. i

F igure'4 represents a section of Online 4 4 Figure 3. c

Figure 5 represents a diametrical section of a modified form of one of the trimming a portion blades.

Figure 6 represents a side elevation of yanother embodiment of the invention.

Figure 7 'represents a top plan view thereof.

Figure 8 represents a bottom plan view of a portion thereof.

Figure`9 represents a yside elevation of another embodiment of the invention.

Similar numerals kof reference indicate corresponding parts in the figures.

Referring to thev drawings,

l designates a circular blade forming the main trimmer of the device, the same being mounted by the axial bolt 2 on the forward ends of the straps or bars 3 v`which are on the oppositey sides of said blade and comprises the frame of the device. On the rear ends of said straps there is mounted by the axial-bolt 4, the circular rotatable blade or disc 5 which comprises ka trailer which is rearward of the blade ortrimmer l in same longitudinal direction thereof and is adapted to enter the light groove formed by said blade l and so serves as a guide and steadier of the latter, aswill be hereinafter more fully described, said trailer, however, not being necessarily sharpened to any material extent.

6 designates a fork formed of lplates whose forward ends are connected pivotally with the sidesof the straps 3 intermediate of the ends of the latter by the bolts 7, said 'the ground while some pressure is exerted on the trailer to cause it to enter the groove blade, said collars being of less diameters than the respective blades and form ygages for limiting the degree of penetration of the respective cutting edges yinto the lpath or road along the lines of grassen said `path -or road to be cut 4and trimmed.

it will be seen that as thedevice is -mor'ed against the grass existing along the sides of the path or .road,the blade l cuts and trims said grass, and the blade 5 follows said blade 1 and finishes the cutting and trimming action. The blades are held'down to their workrby vthe downward Ipressure eX- erted on the handle 9 and their cutting `edges penetrate the ground of the rpath or road v'forming light furrows, so that the trailer particularly `entering the furrow primarily formed by the advance Ablade serves to guide the latter true Vto the workwhile the collars of the blades vlimit the degree `of penetration of the cutting edges thereof into the ground Vregulated in a .measure by the downward pressure exerted on the handle bythe operator.

-One side of the kblade isilat from said collar 10 to its extreme .peripher-y, whereby said side `runs close in contact with the side edge of the lawn, but the other side is `beveled from .near its peripheral portion to the extreme periphery producing the-cutting edge of the blade at the periphery ofthe flat side thereof serving to press l.the `flat side of the blade tightly against the side wall vand so effectively shearing` and trimming the grass and thus said cutting edge comes in Contact with the grass that overhangs said edge of the lawn and so eifectively shears oilsaidl grass close up to said edge. The trailer 5 is a blade having thereon the depth gage collar 1l, as has been stated, and constructed otherwise similar `,to the main cutting blade 1 with one side beveled from near its peripheral portion to the extreme periphery itself as shown in Figure 6, while the oppositeside is Hat as shown in yFigure 1, similar to the corre- `spending side of the main blade las also shown in vFigures l and Ll. Hence the trailer runs parallel and so true along vthe yside edge vof the lawn and thereby assists `in guiding the main 4blade true and parallel 'along 1 said iedge, while any ,Y grass l.overhang- `ingfzsaidvedge that may haveescaped being cut by the :main blade will .be `reached lby said trailer-and :so vcut that vthe trimming of the grass at said edge is effectively accomplished. In the embodiment shown in Figures 6, 7 and 8, the fork 6 is mounted on the axial bolt 2 of the blade l instead of on the straps 3 as in Figure l. Rising from and secured fto said straps are the arms 12y with whose upper ends are connected the.

springs v13 which latter are also connected with the fork 6 so that the tendency of said springs is to draw said arms in rearward direction and lower .the straps 3 thus forcing down the trailer 5 into the ground and running it true and parallel along the side edge lof the lawn while-allowing vsaid trailer `to riseand lower due to inequalities of the ground, but the handle 9 vmay also be operated `to trimmer.

In the embodimentshown in LFigure 9,the

ltrailer .consistsof the `shoe `121 of somewhat convex `form in lieu of the. blade 5, it being continuous lof the strapsf and extending rearward thereof, its lower portion being adapted to enter a furrow made in the ground by the main lblade 1 and guide the latter true in its trimming operation, :it being adapted to be rforced downwardly 4by proper operation ofthe handle 9, as inthe previous instances.

Having thus described my inventionwhat I claim as .new and desire-toy secure by Letters Patent, fisL `'said frameirearward'of-theshearing blade in the same longitudinal direction thereofand consistingofa body havinga comparatively narrow periphery adapted to enterandirun in said groove and serve tofguide said shearing ybladetrue and steady .in its work.

2. Inagrass edge-trimmer, a front rotatable trimming blade, a guiding and steadying device rearward thereof, a member on which said blade and device are mounted,

and a handle connected Awith said rmembcr, said handle having its :lower end directly yoverl the periphery of said blade.

Inagrass edge trimmer, a `front'rotatable trimming blade, a frame on which saidblade is rnounted,1ay device longitudinally on the rearfof said yframe adapted to guide and steady said blade, and a handle adapted to lbe pivotally connected -withzsaid frame rearward of the axis of said blade.

1. In agrass edge trimmer, a rotatable shearing blade, a fralneion vwhich thesame depress the trailer Iand main is mounted, said blade being adapted to to enter and run' in said groove formed by shear the grass and to form a groove be the shearing blade. f tween a side Walk and the sod, and a trailer mountedon said frame rearward of said l ALLEN MOVHORTER" shearing blade in the same longitudinal d- Witnesses: reetion thereof consisting of a disc having ,H. B. MARSHALL, Jr.

a comparatively narrow periphery adapted R. H. SEFTON. 

